Active protection device for fragment splashing in forcible entry process and use method of active protection device

Abstract

The invention discloses an active protection device for fragment splashing in the forcible entry process and a using method of the active protection device, and belongs to the technical field of safety protection. The device comprises a transparent front baffle fixedly installed, movable side protection assemblies symmetrically arranged on the two sides of the transparent front baffle, and an adjusting assembly driven by a servo motor. The side protection assemblies are connected with the front baffle through hinge structures and driven by the adjusting assemblies to achieve automatic unfolding and folding. The control system is combined with an angle encoder and an angle sensor to achieve closed-loop control, and the unfolding angle of the side plate can be accurately adjusted. The front baffle is provided with an operation window so that a forcible entry tool can enter and exit conveniently. A fragment monitoring sensor and an alarm device are further integrated, the splashing risk can be sensed in real time, and local protection can be automatically enhanced. Intelligent adjustment and active response of the protection posture are achieved, and the system has the advantages of being transparent in view, high in safety, high in adaptability, high in automation degree and the like and is suitable for various forcible entry operation scenes.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of safety protection, in particular relates to a kind of active protection device of fragment splashing in breaking and tearing process and its use method. BACKGROUND

[0002] With the continuous advancement of urbanization process and the increasing demand for infrastructure renovation, building structure demolition, bridge disintegration, tunnel excavation, rescue breaking and tearing after earthquake disaster and other engineering activities are frequently carried out. In these processes, high-energy breaking and tearing tools such as hydraulic breaking hammer, wind pick, impact drill are widely used to hit and break concrete, masonry, steel and other materials. However, in the process of breaking and tearing, due to the sudden release of internal stress of materials and the impact of tools, a large number of high-speed flying fragments, including concrete blocks, metal chips, steel fragments, etc., are easily produced, with a flight speed of dozens of meters per second, having a strong kinetic energy and penetration ability, seriously threatening the safety of on-site operators, surrounding equipment and adjacent buildings. The traditional fragment protection measures mainly rely on passive physical barriers, such as setting up fixed steel plate fence, sand bag stacking wall or simple plastic splash-proof curtain around the operation area. This kind of protection method has many limitations:

[0003] Firstly, the structure is fixed and cannot be adjusted, which is difficult to adapt to the operation requirements in different space conditions, especially in narrow space or complex terrain; secondly, the protection range is limited, most of which only provide single-sided or local shielding, which cannot effectively block the lateral splashing path, and there is obvious blind area of protection; thirdly, it lacks intelligent response ability and cannot sense the changes of on-site risks.

[0004] Therefore, we provide a kind of active protection device of fragment splashing in breaking and tearing process and its use method to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide an active protection device of fragment splashing in breaking and tearing process and its use method, which solves the existing problems.

[0006] To solve the above technical problems, the present application is realized by the following technical scheme:

[0007] The present application is an active protection device of fragment splashing in breaking and tearing process, which comprises a front baffle and a side protection assembly symmetrically installed on both sides of the front baffle; the side protection assembly comprises a bearing seat fixed to the side end of the front baffle, an installation seat composed of a shaft and a bearing seat, an installation frame fixed to the installation seat, and a side plate fixed to the outside of the installation frame.

[0008] The side protection assembly is equipped with an adjusting assembly for angle adjustment, the adjusting assembly comprises a motor fixed to the back of the front baffle, a driving arm connected with the output shaft of the motor, a transmission arm rotatably arranged at the end of the driving arm, a connecting arm fixed to the outer end of the transmission arm, a support rod rotatably connected with the connecting arm, and a crossbeam for fixing the support rod and the mounting frame.

[0009] The upper middle position of the front baffle is provided with an operation window, and the bottom of the front baffle is fixed to the foundation of the breaking site.

[0010] The front baffle is made of transparent bulletproof material, and the surface is coated with an impact-resistant wear-resistant coating.

[0011] The motor is a servo motor, and is equipped with an angle encoder for real-time feedback of the rotation angle of the driving arm.

[0012] The mounting frame is provided with an angle sensor for detecting the unfolding angle of the side plate relative to the front baffle and feeding back a signal to the control system.

[0013] The control system receives the signal of the angle sensor and automatically controls the start and stop of the motor according to the preset angle, so as to realize the automatic unfolding and folding of the side plate.

[0014] A use method of an active protection device for fragments flying in a breaking process, comprising the following steps:

[0015] S1: fixing the bottom of the front baffle to the foundation of the breaking site;

[0016] S2: starting the motor to drive the side plate to rotate and unfold to a predetermined protection angle around the bearing seat through the adjusting assembly;

[0017] S3: performing breaking operation through the operation window;

[0018] S4: after the operation is completed, the motor is started in reverse to fold the side plate to a transportation or storage state.

[0019] The application further comprises a fragment monitoring sensor and an alarm device arranged in the breaking area, the fragment monitoring sensor is in communication connection with the control system, when high-speed flying objects are detected, the control system controls the alarm device to start, and automatically adjusts the unfolding angle of the side plate to enhance local protection.

[0020] The application has the following beneficial effects:

[0021] 1. The active protection device for debris splashing in the breaking and demolishing process provided by the present application breaks through the limitation of limited application range of traditional fixed protection devices by arranging rotatable and expandable side protection components on both sides of the front baffle and equipping with a connecting rod type adjusting mechanism driven by a servo motor, so that the side plate can automatically adjust the expansion angle according to the actual operation space and safety requirements, greatly enhances the environmental adaptability and flexibility of the device, and is suitable for various complex working conditions such as urban building demolition, underground engineering breaking and demolishing, emergency rescue and the like.

[0022] 2. The active protection device for debris splashing in the breaking and demolishing process provided by the present application configures a servo motor and integrates an angle encoder with an angle sensor on the mounting frame to build a closed-loop feedback control system; the system can automatically control the expansion and folding actions of the side plate according to the preset parameters, and monitor the actual angle in real time, so as to ensure that the movement process is stable and the positioning is accurate; the operator only needs to start with one key to complete the switching of the protection posture, without manual intervention or manual adjustment, which not only improves the operation efficiency, but also avoids the safety hazards caused by human operation errors, and embodies high intelligence and man-machine friendliness.

[0023] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the embodiment description will be briefly introduced as follows.

[0025] Figure 1 It is a front view of the overall structure of the present application.

[0026] Figure 2 It is a rear view of the overall structure of the present application.

[0027] Figure 3 It is a top view of the overall structure of the present application.

[0028] Figure 4 It is a Figure 2 It is an enlarged schematic view of structure A in the present application.

[0029] In the drawings, the component list represented by each number is as follows:

[0030] 100, front baffle; 101, operation window; 200, side protection component; 201, bearing seat; 201, shaft; 203, mounting seat; 204, mounting frame; 205, side plate; 300, adjusting component; 301, motor; 302, driving arm; 303, transmission arm; 304, connecting arm; 305, support rod; 306, cross beam. DETAILED DESCRIPTION

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0032] Example 1

[0033] Please see Figures 1-4 This invention is an active protection device for debris splashing during demolition, including a front baffle 100 and side protection components 200 symmetrically installed on both sides of the front baffle 100. The side protection components 200 include a bearing seat 201 fixed to the side end of the front baffle 100, a mounting seat 203 forming a hinge system with the bearing seat 201 via a shaft 202, a mounting frame 204 fixed to the mounting seat 203, and a side plate 205 fixed to the outside of the mounting frame 204. The side protection components 200 are equipped with an adjustment component 300 for angle adjustment. The adjustment component 300 includes a motor 301 fixed to the back of the front baffle 100, a drive arm 302 connected to the output shaft of the motor 301, a transmission arm 303 rotatably set at the end of the drive arm 302, a connecting arm 304 fixed to the outer end of the transmission arm 303, a support rod 305 rotatably connected to the connecting arm 304, and a crossbeam 306 for fixing the support rod 305 to the mounting frame 204.

[0034] The active protection device for debris splashing during demolition provided in this embodiment is based on the principle of providing efficient and dynamic protection against flying debris during demolition operations. It aims to provide an active protection device that combines safety, flexibility, and automated control capabilities. The overall structure uses the front baffle 100 as the core load-bearing and protective foundation, combined with side protection components 200 on both sides that can automatically adjust their unfolding angle, forming a three-dimensional protective space with an opening in the front and enclosure on three sides. This effectively blocks concrete fragments, steel rebar fragments, and other high-speed projectiles flying towards the front and sides when demolition machinery (such as hydraulic breakers and pneumatic drills) is operating, thereby ensuring the safety of operators and surrounding equipment.

[0035] Side protection components 200 are symmetrically arranged on the left and right sides of the front baffle 100 to extend the lateral protection range and prevent debris from flying out from the side and causing injury. Each side protection component 200 consists of a bearing seat 201, a mounting base 203, a mounting frame 204, and a side plate 205, forming a hinged movable structure. The bearing seat 201 is fixed to the side edge of the front baffle 100 and is hinged to the mounting base 203 via a shaft 202, allowing the entire side protection component 200 to rotate around the hinge axis, enabling the side plate 205 to unfold and retract relative to the front baffle 100. The mounting frame 204 serves as a load-bearing skeleton, connecting and supporting the external side plate 205. The side plate 205 is also made of high-strength impact-resistant material and can be designed as a multi-layer composite structure to enhance the protection level if necessary. The side plate 205 rotates together with the mounting frame 204, and its unfolding angle can be flexibly adjusted according to the actual working space and safety requirements.

[0036] The components in the adjustment assembly 300, including the motor 301, drive arm 302, transmission arm 303, connecting arm 304, support rod 305, and crossbeam 306, form a closed-loop linkage system. The motor 301 is fixed to the back of the front baffle 100, and its output shaft is directly connected to the drive arm 302, allowing it to rotate precisely at a certain angle under the command of the control system. The end of the drive arm 302 is hinged to one end of the transmission arm 303 via a pin, and the other end of the transmission arm 303 is connected to the connecting arm 306. 4. The support rod 305 and the crossbeam 306 form a rotating pair, and the crossbeam 306 is rigidly fixed to the mounting frame 204 of the side protection assembly 200. When the motor 301 starts, the rotational motion of the drive arm 302 is transmitted step by step through the transmission arm 303, the connecting arm 304, and the support rod 305, and is converted into a pushing and pulling force on the mounting frame 204, thereby driving the entire side protection assembly 200 to rotate around the hinge point of the bearing seat 201, so as to realize the unfolding or folding of the side plate 205.

[0037] Specifically, the motor 301 is a servo motor equipped with an angle encoder for real-time feedback of the rotation angle of the drive arm 302; the mounting bracket 204 is equipped with an angle sensor for detecting the unfolding angle of the side plate 205 relative to the front baffle 100 and feeding the signal back to the control system; the control system receives the signal from the angle sensor and automatically controls the motor 301 to start and stop according to the preset angle, thereby realizing the automatic unfolding and retraction of the side plate 205.

[0038] Motor 301 is equipped with an angle encoder, which can monitor the actual rotation angle of drive arm 302 in real time to ensure motion accuracy. An angle sensor on mounting bracket 204 is used to detect the current unfolding angle of side plate 205 relative to front baffle 100 and feeds this data back to the central control system in real time. The control system compares the preset safety angle parameters (such as 45°, 60° or 90°, etc.) with the real-time acquired angle signal to automatically determine whether to continue driving motor 301 or stop it in time, thereby achieving precise positioning and closed-loop control of the side plate 205 unfolding process. For example, when entering the operation mode, the system can automatically unfold both side plates 205 to a predetermined angle to form a closed protective zone; after the operation is completed, the system can instruct motor 301 to reverse so that the side plates 205 can be retracted, facilitating equipment transfer or transportation in confined spaces.

[0039] Furthermore, an operating window 101 is provided at the upper center of the front baffle 100, providing an access channel for demolition tools (such as a breaker hammer). This allows the equipment to extend into the work area to perform demolition tasks under controlled conditions, without affecting work efficiency and to minimize the escape path of debris. The bottom of the front baffle 100 is fixed to the foundation of the demolition site, ensuring that the entire protection system has sufficient stability and anti-overturning capacity when subjected to lateral impact. The front baffle 100 is made of transparent bulletproof material, such as polycarbonate composite board or a sandwich structure of multi-layer glass and resin. It not only has excellent impact resistance but also ensures that the operator has a clear view during the operation, making it easy to observe the working status of the demolition area in real time. Its surface is coated with an impact-resistant and wear-resistant coating, which improves its surface hardness and durability, preventing scratches, fogging, and other problems caused by long-term contact with debris friction or minor impacts, thus extending its service life.

[0040] Example 2

[0041] Based on Specific Embodiment 1, a method for using an active protection device against flying debris during demolition includes the following steps:

[0042] S1: First, firmly fix the bottom of the front baffle 100 to the foundation of the demolition site using high-strength anchor bolts or quick-anchoring devices to ensure that the entire protective device has sufficient structural stability and impact resistance in subsequent operations; this step is a prerequisite for ensuring the safe conduct of all subsequent operations; the front baffle 100 is made of transparent bulletproof material, which can effectively resist the impact of high-speed flying objects without obstructing the operator's direct observation of the demolition area; an operating window 101 is provided in the middle of its upper part to provide a passage for demolition tools (such as hydraulic breakers, pneumatic picks, etc.); during installation, ensure that the front baffle 100 is perpendicular to the ground and the operating window 101 is aligned with the demolition target area so that tools can be easily extended into the working face;

[0043] S2: After the foundation is fixed, the control system is activated, driving the servo motor 301 to rotate forward. The output shaft of the motor 301 drives the drive arm 302 to rotate. The rotational motion is converted into a linear push-pull force through the linkage mechanism composed of the transmission arm 303, connecting arm 304, and support rod 305. This force acts on the crossbeam 306 and is transmitted to the mounting bracket 204, thereby pushing the side protection assembly 200 to rotate around the hinge axis of the bearing seat 201. During this process, the angle encoder installed at the end of the motor 301 provides real-time feedback on the rotation angle data of the drive arm 302. An angle sensor mounted on the mounting bracket 204 continuously monitors the actual unfolding angle of the side panel 205 relative to the front baffle 100 and transmits the signal to the control system. The control system precisely controls the start and stop of the servo motor 301 according to the preset protection angle (e.g., 60° or 90°, set according to the site space and safety level) to achieve precise positioning and unfolding of the side panel 205. The two side panels 205 move synchronously to form a U-shaped or semi-enclosed protective barrier, effectively blocking the path of debris flying to the left and right sides and constructing a complete front and side protection zone.

[0044] S3: Once the side panel 205 is fully deployed and confirmed to be in place, the operator can introduce the demolition equipment through the operation window 101 to begin work. At this stage, the device not only provides a physical barrier but also integrates intelligent monitoring functions. Specifically, debris monitoring sensors (such as high-speed cameras, laser Doppler velocimeters, acoustic emission sensors, or microwave radar) are deployed around the demolition area to detect in real time whether high-speed projectiles are generated and their trajectory, speed, and direction. These sensors maintain communication with the central control system. Once an abnormal high-speed projectile is detected (such as concrete fragments flying out at a speed exceeding a set threshold), the control system immediately triggers a dual response mechanism: on the one hand, it activates an audible and visual alarm device to issue an emergency warning to on-site personnel; on the other hand, based on the direction of the projectiles to determine the risk area, the control system can dynamically adjust the deployment angle of the corresponding side panel 205 (for example, from 60° to 90° or even greater) to enhance the shielding range and protection strength of that side, realizing an active protection strategy of "enhancing as needed." This adaptive adjustment capability greatly improves the device's ability to cope with sudden high-risk events.

[0045] S4: After the demolition operation is completed, the operator issues a retraction command through the control system. The servo motor 301 rotates in reverse, driving the linkage mechanism to move in the opposite direction, so that the two side plates 205 gradually move closer to the front baffle 100, and finally retract to a close fit or a compact posture that is easy to transport. This process is also controlled by closed-loop feedback from angle sensors and encoders to ensure smooth operation and accurate positioning. After retraction, the size of the entire device is reduced, making it easy to move or transport to the next work point in a confined space. If long-term storage is required, some components can be further disassembled for storage.

[0046] In addition, it includes a debris monitoring sensor and an alarm device installed in the demolition area. The debris monitoring sensor is connected to the control system. When high-speed flying debris is detected, the control system activates the alarm device and automatically adjusts the unfolding angle of the side plate 205 to enhance local protection.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. An active protection device for debris splashing during demolition, comprising a front baffle (100) and side protection components (200) symmetrically installed on both sides of the front baffle (100); characterized in that: The side protection assembly (200) includes a bearing seat (201) fixed to the side end of the front baffle (100), a mounting seat (203) that forms a hinge system with the bearing seat (201) via a shaft (202), a mounting bracket (204) fixed to the mounting bracket (203), and a side plate (205) fixed to the outside of the mounting bracket (204). The side protection assembly (200) is equipped with an adjustment assembly (300) for angle adjustment. The adjustment assembly (300) includes a motor (301) fixed to the back of the front baffle (100), a drive arm (302) connected to the output shaft of the motor (301), a transmission arm (303) rotatably set at the end of the drive arm (302), a connecting arm (304) fixed to the outer end of the transmission arm (303), a support rod (305) rotatably connected to the connecting arm (304), and a crossbeam (306) for fixing the support rod (305) to the mounting bracket (204).

2. The active protection device for debris splashing during demolition as described in claim 1, characterized in that, An operation window (101) is provided at the upper middle position of the front baffle (100), and the bottom of the front baffle (100) is fixed to the foundation of the demolition site.

3. The active protection device for debris splashing during demolition as described in claim 1, characterized in that, The front panel (100) is made of transparent bulletproof material and its surface is coated with an impact-resistant and wear-resistant coating.

4. The active protection device for debris splashing during demolition as described in claim 1, characterized in that, The motor (301) is a servo motor equipped with an angle encoder for real-time feedback of the rotation angle of the drive arm (302).

5. The active protection device for debris splashing during demolition as described in claim 1, characterized in that, An angle sensor is provided on the mounting bracket (204) to detect the unfolding angle of the side plate (205) relative to the front baffle (100) and to feed the signal back to the control system.

6. The active protection device for debris splashing during demolition as described in claim 5, characterized in that, The control system receives signals from the angle sensor and automatically controls the motor (301) to start and stop according to the preset angle, thereby realizing the automatic unfolding and retraction of the side panel (205).

7. The method of using the active protection device for debris splashing during demolition according to any one of claims 1-6, characterized in that, Includes the following steps: S1: Fix the bottom of the front baffle (100) to the foundation of the demolition site; S2: Start the motor (301) and drive the side plate (205) to rotate and unfold around the bearing seat (201) to the predetermined protection angle through the adjustment component (300); S3: Perform demolition operations through the operation window (101); S4: After the operation is completed, start the motor (301) in reverse and fold the side plate (205) to the transportation or storage state.

8. The method of using the active protection device for debris splashing during demolition as described in claim 7, characterized in that, It also includes a debris monitoring sensor and an alarm device installed in the demolition area. The debris monitoring sensor is connected to the control system. When high-speed flying debris is detected, the control system activates the alarm device and automatically adjusts the unfolding angle of the side plate (205) to enhance local protection.

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